Mark 14 nuclear bomb

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Mark 14 nuclear bomb.
The Castle Union test of the Mark 14 design.

For the Sinclair Research Ltd. SC/MP based computer system see MK14. For the torpedo see Mark 14 torpedo.

The Mark 14 nuclear bomb was a 1950s Strategic thermonuclear weapon, the first solid-fuel staged hydrogen bomb. It was an experimental design, and only five units were produced in early 1954. It was tested in April 1954 during the Castle Union nuclear test and had a yield of 6.9 Mt. The bomb is often listed as the TX-14 (for "experimental") or EC-14 (for "Emergency Capability"). It has also been referred to as the "Alarm Clock" device though it has nothing to do with the design by the same name proposed earlier by Edward Teller and known as the Sloika in the Soviet Union.

The fusion fuel used by the bomb was 95% enriched Lithium isotope 6 lithium deuteride, which at the time was a scarce resource and chiefly responsible for its limited deployment. The Castle Bravo test showed that unenriched Lithium isotope 7 functioned as well for nuclear fusion reactions as isotope 6. The Mk-14 bomb had a diameter of 61.4 inches (1.56 m) and a length of 222 inches (5.64 m). They weighed between 28,950 and 31,000 pounds (13,100 and 14,100 kg), and used a 64 feet (20 m) parachute.[1]

The version tested at Castle Union used a RACER IV primary, which resulted in 5 Mt of its total yield coming from fission, making it a very "dirty" weapon.[2]

By 1956, the components of all five of the produced Mk-14 bombs had been recycled into Mark 17s.

See also


  1. ^ List of All U.S. Nuclear Weapons at
  2. ^ *Operation Castle at
Further reading
  • Hansen, Chuck, "Swords of Armageddon: U.S. Nuclear Weapons Development since 1945" (CD-ROM & download available). PDF-2.67 Mb. 2,600 pages, Sunnyvale, California, Chucklea Publications, 1995, 2007. ISBN 978-0-9791915-0-3 (2nd Ed.)
Retrieved from ""
This content was retrieved from Wikipedia :
This page is based on the copyrighted Wikipedia article "Mark 14 nuclear bomb"; it is used under the Creative Commons Attribution-ShareAlike 3.0 Unported License (CC-BY-SA). You may redistribute it, verbatim or modified, providing that you comply with the terms of the CC-BY-SA